CN106559199A

CN106559199A - A kind of method and device of configurating channel state measurement pilot tone

Info

Publication number: CN106559199A
Application number: CN201510624664.XA
Authority: CN
Inventors: 李永; 李儒岳; 陈艺戬; 肖华华; 鲁照华; 蔡剑兴; 吴昊
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2015-09-25
Filing date: 2015-09-25
Publication date: 2017-04-05
Also published as: WO2017050065A1; EP3355507A4; US20180270032A1; US11233611B2; EP3355507A1; US20220103326A1

Abstract

The invention discloses a kind of method and device of configurating channel state measurement pilot tone (CSI-RS), including：Base station determines the configuration information of CSI-RS；Base station generates the signaling of the configuration information for including CSI-RS；Base Transmitter includes the signaling of the configuration information of CSI-RS；Wherein, the configuration information includes：Multiplex mode between port number, pilot resources pattern-information and CSI-RS ports；When port number is more than 1, there is the pilot resources pattern of M kind candidates in CSI-RS, M is the integer more than 1.The method and device of configuration CSI-RS disclosed by the invention, it would be preferable to support CSI-RS transmission of the port number more than 8.

Description

A kind of method and device of configurating channel state measurement pilot tone

Technical field

The present invention relates to the communications field, more particularly to a kind of configurating channel state measurement pilot tone (CSI-RS, Channel State Information-Reference Signal) method and device.

Background technology

Long Term Evolution (LTE, Long Term Evolution)/long-term evolution upgrading (LTE-A, LTE-Advanced) technology is the forth generation mobile communication technology (4G) of main flow.LTE/LTE-A point Following two different duplex modes：Frequency division duplex mode (FDD, Frequency Division Duplex), Time-division double type mode (TDD, Time Division Duplex).The frame structure of frequency division duplex mode is referred to as First kind frame structure (Frame structure type 1), the frame structure of time division duplex is referred to as second Type frame structure (Frame structure type 2).

Schematic diagrams of the Fig. 1 for first kind frame structure.As shown in figure 1, the explanation of first kind frame structure It is as follows：Each radio frames (radio frame) a length of T_f=307200T_s=10ms (millisecond), by 20 time slots (slot) constitute, the length of time slot is T_slot=15360T_s=0.5ms (millisecond), numbers from 0 to 19, wherein, Ts is unit of time, T_s=1/ (15000 × 2048) second；Subframe (subframe) is defined as continuous by two Time slot is constituted, i.e., subframe i is made up of time slot 2i and 2i+1；For FDD duplex modes, in 10 millis In second time interval, 10 subframes are used for downlink transfer, and 10 subframes are used for uplink；Up biography It is defeated to be carried out over different frequencies with downlink transfer respectively, in half-duplex (half-duplex) FDD modes Under, terminal (UE, User Equipment) is unable to simultaneous transmission and receives, and in full duplex FDD Under mode, no this restriction.

Schematic diagrams of the Fig. 2 for Second Type frame structure.As shown in Fig. 2 the explanation of Second Type frame structure It is as follows：Each radio frames (radio frame) a length of T_f=307200T_s=10ms, by two fields (half-frame) constitute, half frame length is 153600T_s=5ms, each field is by 5 subframes (subframe) Constitute, each subframe lengths is 30720T_s=1ms, each subframe definition are that two time slots (slot) are constituted, I.e. subframe i is made up of time slot 2i and 2i+1, and slot length is T_slot=15360T_s=0.5ms, wherein, Ts For unit of time, T_s=1/ (15000 × 2048) second.

Uplink-downlink configuration (uplink-downlink configuration) change of one cell occurs in frame Between, downstream transmission occurs in the subframe of frame.The uplink-downlink configuration of present frame is obtained by high-level signaling.

Uplink-downlink configuration (uplink-downlink configuration) shown in table 1 has 7 kinds, right Each subframe in a radio frames, one descending sub frame of " D " labelling, for downlink transfer, One sub-frame of uplink of " U " labelling, for uplink, one special subframe of " S " labelling.It is special Subframe has three below region：Descending pilot frequency time slot (DwPTS), protection interval (GP, Guard Period) And uplink pilot time slot (UpPTS).

Table 1

LTE/LTE-A technologies downlink transfer adopts OFDM (OFDM, Orthogonal Frequency Division Multiplexing) modulation technique, data are modulated at the subcarrier of frequency domain (subcarrier), on, then switching to time domain increases the complete time domain transmitting of upper Cyclic Prefix composition one OFDM symbol.Cyclic Prefix (CP, cyclic prefix) is to resist what multipath was produced in time domain Symbol-interference and the inter-sub-carrier interference produced on frequency domain.There are two kinds in LTE/LTE-A systems The CP of length, a kind of is normal CP (NCP, Normal cyclic prefix), another kind of for extension CP (ECP, Extended cyclic prefix).Extension CP is applied in the bigger field of multi-path delay spread Under scape.In the case of normal CP, subcarrier spacing is 15kHz；In the case of extension CP, between subcarrier Two kinds are separated with, respectively 15kHz and 7.5kHz.

The signal of each slot transmission is described with one or more resource grids (resource grid), money Source grid byIndividual subcarrier withIndividual OFDM symbol (OFDM symbol) is constituted.Its In,Represent Physical Resource Block (PRB, Physical Resource Block) or Resource Block (RB, Resource Block) number,The number of Resource Block sub-carriers is represented,Represent in time slot OFDM symbol number.Table 2 show Physical Resource Block parameter, the OFDM symbols on a RB Count mesh is as shown in table 2 with number of sub carrier wave.Table 3 show OFDM symbol parameter, Cyclic Prefix Length it is as shown in table 3.

Table 2

Table 3

The number of Physical Resource BlockDetermined by the downstream transmission bandwidth of cell configuration, and minima is 6, maximum is 110.

Same PRB in same subframe on continuous two time slots, referred to as one PRB is to (PRB pair)。

Schematic diagrams of the Fig. 3 for downlink resource grid.As shown in figure 3, each unit in resource grid claims For Resource Unit (RE, Resource Element), and index of reference is to (k, l) labelling, wherein,Subcarrier sequence number on frequency domain is represented,Represent the OFDM in time domain Symbol sequence number.

Antenna port is defined as the channel passed through by symbol transmitted on this antenna port, can be by this The channel passed through by other symbols transmitted on individual same port speculates.It is right that one antenna port there is also defined The sequence number answered, to carry out the index of the differentiation between antenna port and the antenna port.

Down physical channel (Downlink Physical Channel) correspond to the set of some Resource Units, To carry the information for coming from upper strata.Downlink physical information includes：Physical Downlink Shared Channel (PDSCH, Physical Downlink Shared Channel), Physical Multicast Channel (PMCH, Physical Multicast Channel), Physical Broadcast Channel (PBCH, Physical Broadcast Channel), Physical Control Format Indicator Channel (PCFICH, Physical Control Format Indicator Channel), Physical Downlink Control Channel (PDCCH, Physical Downlink Control Channel), Physical hybrid automatic repeat request indicator channel (PHICH, Physical Hybrid ARQ Indicator Channel), Physical Downlink Control Channel (EPDCCH, Enhanced Physical Downlink are strengthened Control Channel)。

Downlink physical signal (Downlink Physical Signal) correspond to a set of sets of resource units, Used by physical layer, be not used in carrying upper layer information.Downlink physical signal includes：Pilot signal (RS, Reference signal), synchronizing signal (Synchronization signal), find signal (Discovery signal)。

Pilot signal is also referred to as pilot tone, has following species：District pilots (CRS, Cell-specific Reference Signal), multicast/multicast single-frequency network network (MBSFN, Multimedia Broadcast Single Frequency Network) pilot tone (MBSFN reference signals), UE dedicated pilots (demodulation Pilot tone (DMRS, Demodulation Reference Signal)), location pilot (Positioning Reference signal), channel status measurement pilot tone (CSI-RS, CSI reference signal).Its In, UE dedicated pilots have two categories below again：UE dedicated pilot (the UE-specific of demodulation PDSCH Reference signals associated with PDSCH), demodulation EPDCCH UE dedicated pilots (Demodulation reference signals associated with EPDCCH)。

Channel status measurement pilot tone (CSI-RS) is for predictably terminal imagination channel status.Sent out using non-zero power The CSI-RS for penetrating, referred to as non-zero power CSI-RS (NZP CSI-RS)；Do sometimes for avoiding producing Disturb, need to avoid the data transmitting on PDSCH on some RE, and adopt zero energy transmitting CSI-RS Mode realizes, now referred to as zero energy CSI-RS (ZP CSI-RS), and corresponding sets of resource units is Zero energy CSI-RS (Zero Power CSI-RS Resource).Sometimes for measurement interference, CSI-RS is launched using zero energy, now corresponding sets of resource units is referred to as interferometry resource (CSI-IM Resource, Channel-State Information-Interference Measurement Resource)。

CSI-RS configures (CSI reference signal configuration) to indicate that CSI-RS is reflected The RE for penetrating, that is, transmit the RE used by CSI-RS, and CSI-RS configurations sequence number is different to distinguish CSI-RS is configured.The RE collection for transmitting or mapping a kind of lower CSI-RS of CSI-RS configurations is collectively referred to as CSI-RS Resource pattern.CSI-RS sub-frame configurations (CSI reference signal subframe configuration) are used To indicate CSI-RS transmission place subframe.

A kind of CSI-RS configurations are that the CSI-RS under certain antenna port number is configured, such as antenna port Number is the CSI-RS configurations of 8 configuration serial number 0.A kind of CSI-RS pattern is certain antenna It is 0 that CSI-RS pattern under port number, such as antenna port number are 8 call number CSI-RS pattern.Generally configuration sequence number is exactly call number.

Under a kind of CSI-RS configurations, the RE collection of the CSI-RS of transmission or demapping section port is collectively referred to as part The port pilot resources pattern of port pilot resources pattern, such as port serial number { 15,16,17,18 }.

Prior art supports the CSI-RS, the CSI-RS of these port numbers that port number is 1,2,4,8 Resource pattern repeats in each PRB of bandwidth range in transmission subframe.

The RE set of all configuration CSI-RS patterns of different port number is identical, i.e. port number It is that 4 all match somebody with somebody equal to port number that mesh is the RE set of 2 all configuration CSI-RS patterns The RE set of CSI-RS pattern is put, equal to all configuration CSI-RSs that port number is 8 The RE set of pattern.For example, it is common for first kind frame structure and Second Type frame structure CSI-RS configuring conditions, the RE set phases of all configuration CSI-RS patterns of different port number Together, the RE numbers in a PRB on are 40.

The resource pattern that Fig. 4 is CSI-RS that port number is 4 in a RB on；Fig. 5 is end Mouthful number is 8 resource patterns of the CSI-RS in a RB on.

In order to make full use of power and improve the precision of channel measurement, also the CSI-RS of each port is divided CSI-RS in the group of group, i.e., including multiple ports, does not wait with one or more number Group.In group, the CSI-RS of each port is mapped to one group of common RE by the way of code division multiplexing On.For example, group's inner port number is N, and CSI-RS sequences are { r₀,r₁,…,r_N-1}；Separately there is length to be N Sequence groupWherein, p=K+0, K+1 ..., K+N-1 have N bar sequences in group Row, it is mutually orthogonal between sequence in group, i.e.,Wherein, i, j=K+0, K+1 ..., K+N-1, and i ≠ j；CSI-RS sequence { r₀,r₁,…,r_N-1To sequenceIt is modulated Obtain the CSI-RS sequences that port is pCorresponding to one group of common RE, Element in CSI-RS sequences of the port for p is corresponded and is mapped to RE.The length that N is as multiplexed.

In prior art, between port, the mode of CSI-RS multiplexing mappings to RE is as follows：Port is drawn It is divided into group, such as { 15,16 }, { 17,18 }, { 19,20 }, { 21,22 } amount to 4 groups, this It is multiplexed on RE with frequency division manner between 4 groups；And the CSI-RS in group's inner port is then in time domain On be multiplexed on RE in code division mode, the CSI-RS of such as CSI-RS of port 15 and port 16 exists It is multiplexed in code division mode in time domain.

Base station notifies terminal with regard to the information of CSI-RS by top signaling, and these information include：CSI-RS Resource distribution identifier (CSI-RS resource configuration identity), CSI-RS port numbers, CSI-RS configurations, CSI-RS sub-frame configurations.

CRS can be not only used for the measurement to channel status, it can also be used to channel coefficients be estimated when receiving demodulation Calculate, but increasing with port number, expense is increased dramatically.So, in the case that port number is 8 Do not use CRS to measure channel status, and use that pilot density is low, the CSI-RS that expense is few instead. But with technology and the development of demand, need further to develop the skill that greater number antenna end is scooped out Art, such as port number are 12,16 etc., are directed to these greater number port channel states Measurement, but, prior art cannot support the CSI-RS transmission that port number is 12,16.In addition, When port number increases to 12,16, big expense, channel measurement hydraulic performance decline, terminal can be caused multiple It is miscellaneous degree it is high the problems such as.

The content of the invention

In order to solve above-mentioned technical problem, the present invention provides a kind of configurating channel state measurement pilot tone (CSI-RS) method and device, it would be preferable to support CSI-RS transmission of the port number more than 8.

In order to reach above-mentioned technical purpose, the present invention provides a kind of method of configuration CSI-RS, including： Base station determines the configuration information of CSI-RS；Base station generates the signaling of the configuration information for including CSI-RS； Base Transmitter includes the signaling of the configuration information of CSI-RS；Wherein, the configuration information includes：Port Multiplex mode between number, pilot resources pattern-information and CSI-RS ports；When port number is more than When 1, there is the pilot resources pattern of M kind candidates in the CSI-RS, and M is the integer more than 1.

The present invention also provides a kind of device of configuration CSI-RS, including：Determining module, for determining The configuration information of CSI-RS；Generation module, for generating the signaling of the configuration information for including CSI-RS； Transmitter module, includes the signaling of the configuration information of CSI-RS for transmitting；Wherein, the configuration information Including：Multiplex mode between port number, pilot resources pattern-information and CSI-RS ports；Work as end When mouth number is more than 1, there is the pilot resources pattern of M kind candidates in the CSI-RS, M is more than 1 Integer.

In the present invention, base station determines the configuration information of CSI-RS；Base station generates includes matching somebody with somebody for CSI-RS The signaling of confidence breath；Base Transmitter includes the signaling of the configuration information of CSI-RS；Wherein, the configuration Information includes：Multiplex mode between port number, pilot resources pattern-information and CSI-RS ports； When port number is more than 1, there is the pilot resources pattern of M kind candidates in CSI-RS, M is more than 1 Integer.By the present invention, realize the CSI-RS for port number being supported more than 8 (such as 12 or 16) Transmission.

By the embodiment of the present invention, in the case of the bigger pilot frequency multiplexing factor is provided, expense is reduced, Improve channel estimation quality, reduce transmitting with receive complexity, while support port number be 12, 16 CSI-RS transmission.

Description of the drawings

Schematic diagrams of the Fig. 1 for first kind frame structure；

Schematic diagrams of the Fig. 2 for Second Type frame structure；

Schematic diagrams of the Fig. 3 for downlink resource grid；

Fig. 4 for channel status that port number is 4 measurement pilot tone (CSI-RS) in a RB on Resource pattern；

The resource pattern that Fig. 5 is CSI-RS that port number is 8 in a RB on；

Fig. 6 is the flow chart of the method for configuration CSI-RS provided in an embodiment of the present invention；

Fig. 7 is the schematic diagram of the device of configuration CSI-RS provided in an embodiment of the present invention；

Fig. 8 is that every group of CSI-RS code division multiplexing is in continuous subcarrier in the case that port number is 16 4 RE on schematic diagram；

Fig. 9 is that every group of CSI-RS code division multiplexing is in continuous subcarrier in the case that port number is 12 4 RE on schematic diagram；

Figure 10 be pilot density be each PRB to the RE of each port one in the case of, a PRB To pattern of the upper peak frequency interval less than 9；

Figure 11 is pattern of the maximum time domain interval less than 6；

Figure 12 is pattern of the maximum time domain interval less than 5；

Figure 13 is that pilot density is to each port per three PRB in the case that port number is 12 The pattern of two RE；

Figure 14 is that, in the case that port number is 12, pilot density is each two PRB to each port The pattern of one RE；

Figure 15 is in the case that port number is 12, by the pattern that a port number is 8 and two ends Mouthful number be 2 combinations of patterns into pattern；

Figure 16 is that every group of code division multiplexed pilot symbol is mapped in the resource pattern that port number is 4 and exists On the RE of PRB couple.

Specific embodiment

Embodiments of the invention are described in detail below in conjunction with accompanying drawing, it will be appreciated that described below Embodiment be merely to illustrate and explain the present invention, be not intended to limit the present invention.

Fig. 6 is the flow chart of the method for configurating channel state measurement pilot tone provided in an embodiment of the present invention.Such as Shown in Fig. 6, the present embodiment provide configurating channel state measurement pilot tone (CSI-RS) method include with Lower step：

Step 11：Base station determines the configuration information of CSI-RS；

Step 12：Base station generates the signaling of the configuration information for including CSI-RS；

Step 13：Base Transmitter includes the signaling of the configuration information of CSI-RS.

Wherein, configuration information includes：Port number, pilot resources pattern-information and CSI-RS ports Between multiplex mode.When port number is more than 1, there is the pilot tone money of M kind candidates in the CSI-RS Source pattern, M are the integer more than 1.

Preferably, the pilot resources pattern of the M kinds candidate includes：When port number is more than first During limit value (TH1), the pilot resources pattern of M kind candidates is at least using between two kinds of CSI-RS ports Multiplex mode.

Specifically, the frequency pilot sign of a port is only launched in a port, and on PDSCH Data symbol is that multiple ports are launched jointly.If only launching the pilot tone of a port on a RE Symbol, then this port can use all power emission on this RE, equivalent at one The power sum of all of the port of the upper transmitted data symbols of RE；Same port launches the power of frequency pilot sign It is more excessive than the power of data symbol, influence whether to launch the accuracy of frequency pilot sign.The pilot tone of multiple ports Symbol by the way of code division multiplexing can be made full use of power, and be reduced single port transmitting pilot tone The power of symbol.In the case of port number is less, a kind of less code division multiplexing length can be adopted； In the case that port number increases, larger code division multiplexing length can be adopted；It is larger in port number In the case of, it is split into sometimes the less pilot tone of several port numbers and uses, using less code division multiplexing Length.Sometimes for the number for changing multiplexed port, increase the OFDM symbol number of time-domain multiplexed； Or, reduce the OFDM symbol number of time-domain multiplexed；Or, increase the interval of frequency domain multiplexing；Or Person, reduces the interval of frequency domain multiplexing.

Preferably, the pilot resources pattern of the M kinds candidate includes：The pilot tone money of the M kinds candidate Source pattern is divided into two set, and the CSI-RS ports of the first pattern set adopt first kind multiplex mode, The CSI-RS ports of the second pattern set adopt Equations of The Second Kind multiplex mode, the first kind multiplex mode with The Equations of The Second Kind multiplex mode is different.

Specifically, provide total port number it is constant in the case of, sometimes in packet port number compared with Greatly, the RE numbers that their multiplexings are occupied are just more, it is necessary to take RE numbers, it is necessary to use OFDM more The larger multiplex mode of symbolic number, or the multiplex mode reduced using frequency domain interval；Sometimes in packet inner end The RE numbers that less their multiplexings of mouth number are occupied are less, it is necessary to take RE numbers less, it is necessary to Using the less multiplex mode of OFDM symbol number, or the multiplex mode increased using frequency domain interval.

Specifically, on the other hand, in the case that port number is larger, larger code division can be adopted The corresponding pilot resources pattern of multiplexing length；In the case where port number is larger, it is split into sometimes several The less pilot tone of port number is used, using the corresponding pilot resources pattern of less code division multiplexing length.

Preferably, the pilot resources pattern of the M kinds candidate includes：The pilot tone money of the M kinds candidate Source pattern is divided into two set, and the CSI-RS ports of the first pattern set adopt first kind multiplex mode, The CSI-RS ports of the second pattern set adopt first kind multiplex mode or Equations of The Second Kind multiplex mode, described First kind multiplex mode is different from the Equations of The Second Kind multiplex mode, the CSI-RS ports of the second pattern set Using multiplex mode configured by base station signaling.

Specifically, provide total port number it is constant in the case of, sometimes in packet port number compared with Greatly, the RE numbers that their multiplexings are occupied are just more, it is necessary to take RE numbers, it is necessary to use OFDM more The larger multiplex mode of symbolic number, or the multiplex mode reduced using frequency domain interval；Sometimes in packet inner end The RE numbers that less their multiplexings of mouth number are occupied are less, it is necessary to take RE numbers less, it is necessary to Using the less multiplex mode of OFDM symbol number, or the multiplex mode increased using frequency domain interval.For Make a part of pattern can be used for being grouped the more situation of middle port number, can be used for again being grouped middle port Small numbers of situation, therefore, the CSI-RS ports of the first pattern set adopt first kind multiplex mode, The CSI-RS ports of the second pattern set adopt first kind multiplex mode or Equations of The Second Kind multiplex mode.

Specifically, on the other hand, in the case that port number is larger, larger code division can be adopted The corresponding pilot resources pattern of multiplexing length；In the case where port number is larger, it is split into sometimes several The less pilot tone of port number is used, using the corresponding pilot resources pattern of less code division multiplexing length. In order that a part of pattern can be used for the larger situation of port number, can apply to again be divided into port number The less situation of mesh, therefore, the CSI-RS ports of the first pattern set adopt first kind code division multiplexing side Formula, the CSI-RS ports of the second pattern set adopt first kind code division multiplexing mode or Equations of The Second Kind code division multiple Use mode.

Preferably, the pilot resources pattern of the M kinds candidate includes：The pilot tone money of the M kinds candidate Source pattern is divided into three set, and the CSI-RS ports of the first pattern set adopt first kind multiplex mode, The CSI-RS ports of the second pattern set adopt Equations of The Second Kind multiplex mode, the CSI-RS of the 3rd pattern set Port adopts first kind multiplex mode or Equations of The Second Kind multiplex mode, the first kind multiplex mode and described the Two class multiplex modes are different, and the multiplex mode that the CSI-RS ports of the 3rd pattern set adopt is believed by base station Order is configured.

Specifically, provide total port number it is constant in the case of, sometimes in packet port number compared with Greatly, the RE numbers that their multiplexings are occupied are just more, it is necessary to take RE numbers, it is necessary to use OFDM more The larger multiplex mode of symbolic number, or the multiplex mode reduced using frequency domain interval；Sometimes in packet inner end The RE numbers that less their multiplexings of mouth number are occupied are less, it is necessary to take RE numbers less, it is necessary to Using the less multiplex mode of OFDM symbol number, or the multiplex mode increased using frequency domain interval.For Make a part of pattern can be used for being grouped the more situation of middle port number, can be used for again being grouped middle port Small numbers of situation, therefore, the CSI-RS ports of the first pattern set adopt first kind multiplex mode, The CSI-RS ports of the second pattern set adopt Equations of The Second Kind multiplex mode, the CSI-RS of the 3rd pattern set Port adopts first kind multiplex mode or Equations of The Second Kind multiplex mode.

Specifically, in the case of port number is less, can be long using a kind of less code division multiplexing Degree；In the case that port number increases, larger code division multiplexing length can be adopted；In port number In the case of larger, it is split into sometimes the less pilot tone of several port numbers and uses, using less code division Multiplexing length.One pattern is applied to split into the less situation of port number, and a part of pattern is applied to The larger situation of port number, a part of pattern be both used for splitting into the less situation of port number, used again In the situation that port number is larger.

Preferably, the multiplex mode is code division multiplexing mode.

Preferably, first kind code division multiplexing mode is the code division multiplexing that orthogonal code length is 2, Equations of The Second Kind code Divide code division multiplexing of the multiplex mode for orthogonal code length is 4.

Preferably, the pilot resources pattern of the M kinds candidate includes：When the port number is more than the During two threshold values, the pilot resources pattern of the M kinds candidate at least adopts two kinds of pilot densities.

Specifically, a Physical Resource Block (PRB) centering can be used to launch CSI-RS pilot tones Resource Unit (RE) has certain limitations, such as, in the case of normal cyclic prefix (CP), use The RE numbers for launching CSI-RS with Second Type frame structure in first kind frame structure are 40.Work as port Number increases, and in the case of keeping constant per port pilot density, available pilot resources pattern just subtracts It is few.For example, port number is 8 CSI-RS, in each PRB to the close of one RE in each port Under degree, there are 5 kinds of pilot resources patterns.And port number is 16 CSI-RS, at each PRB pair Under the density of one RE in each port, 2 kinds of pilot resources patterns have been only capable of.In order to give port number compared with Many situations, there is provided more pilot frequency designs, can be with by the way of port pilot density be reduced.But, In the case where channel relevancy frequency domain correlation is little, reduces pilot density and influence whether channel estimation Performance, it is necessary to retain the resource pattern of higher pilot density.Therefore, in the situation that port number is larger Under, more pilot frequency design had both been provided using various pilot densities, in turn ensure that complex situations lower channel The performance of estimation.

Preferably, the pilot resources pattern of the M kinds candidate includes：The pilot tone money of the M kinds candidate Source pattern is divided into two set, and the first pattern set adopts first kind pilot density, the second pattern set to adopt Equations of The Second Kind pilot density is used, the first kind pilot density is different from the Equations of The Second Kind pilot density.

Wherein, two pattern set correspond to two class pilot densities respectively, can select to make according to actual scene With.

Preferably, the pilot resources pattern of the M kinds candidate includes：In a pilot resources pattern set In conjunction, the multiplex mode between CSI-RS ports is 4 for the length of code division multiplexing, every group of code division multiplexed pilot 4 RE of symbol mapping are located on continuous two subcarriers.

Specifically, as the pilot tone on each port is single port transmitting, in order to make full use of power, Using than launching the higher power emission pilot tone of data on single port；It is equal due to being limited to power device peak The restriction of ratio, still can not make full use of power emission pilot tone, therefore, the solution by the way of code division multiplexing Certainly.If the channel coefficients difference between the RE of code division multiplexing is larger, larger interference will be introduced, And the channel coefficients of adjacent subcarrier there is no difference, the RE of code division multiplexing mapping is selected even This problem can be solved on continuous subcarrier.

Preferably, the pilot resources pattern of the M kinds candidate includes：Pilot density is each PRB pair The peak frequency interval of RE of the pattern of one RE in each port in a PRB on is less than or equal to Subcarrier of the number for the 3rd threshold value (TH3), the peak frequency are located most at intervals of the RE The difference of altofrequency and place low-limit frequency.

Further, the 3rd threshold value is 9.

Specifically, channel estimation is carried out using CSI-RS, need to obtain between each port channel coefficient Comparison, the frequency interval of the RE of same pattern in same PRB on is excessive, can be because channel exist Change in frequency introduces the error of phase-contrast between different port.3rd threshold T H3 is 9, can To avoid RE while being distributed near the lowest frequency of same RB and near most high frequency.

Preferably, the pilot resources pattern of the M kinds candidate includes：On each pilot resources pattern The maximum time domain interval of RE is less than the 4th threshold value (TH4), wherein, the maximum time domain interval is Last OFDM (OFDM) symbol that the RE is located and the most front OFDM symbol that is located Difference.

Further, the 4th threshold value is 6.

Further, the 4th threshold value is 5.

Specifically, channel estimation is carried out using CSI-RS, need to obtain between each port channel coefficient Comparison, the RE of same pattern is excessive in time interval, can be because channel change in time is introduced The error of phase-contrast between different port.4th threshold value is 5, can control same pattern Nearest 5 OFDM symbol is spaced in the OFDM that CSI-RS is mapped using traditional C/S I-RS.The Four threshold values are 6, and the CSI-RS that can control same pattern avoids what is mapped using traditional C/S I-RS The OFDM symbol of spaced furthest in OFDM.

Preferably, the pilot resources pattern of the M kinds candidate includes：When port number is 12, In one pilot resources pattern set, a kind of corresponding port number of every kind of pilot resources pattern is 8 pilot tone Resource pattern, and pilot density is to the RE of each port two, different pilot tones per three PRB The different port number of resource pattern correspondence is 8 pilot resources pattern.

Specifically, when port number is 12, a kind of pilot resources pattern uses a kind of port number For 8 pilot resources pattern, while reduce pilot density, can than using each PRB to each The pilot density of one RE in port provides the pilot resources pattern of greater number, while in order to not waste RE, adopt pilot density for per three PRB to the RE of each port two.

Preferably, the pilot resources pattern of the M kinds candidate includes：When port number is 12, In one pilot resources pattern set, a kind of corresponding port number of every kind of pilot resources pattern is 4 pilot tone Resource pattern and the pilot resources pattern that a kind of port number is 2, and in two OFDM of identical On symbol, pilot density is each two PRB to the RE of each port one, different pilot resources figures The pilot resources pattern that the different port number of case correspondence is 4 pilot resources pattern and port number is 2 Combination.

Specifically, when port number is 12, a kind of pilot resources pattern uses a kind of port number For the combination of 4 pilot resources pattern and the pilot resources pattern that a kind of port number is 2, while reducing Pilot density, can be than providing more to the pilot density of each port one RE using each PRB The pilot resources pattern of number.Using 2 OFDM symbols of identical, and more OFDM are not used Symbol, to avoid pilot frequency design that excessive introducing channel estimation errors are distributed in time domain.

Preferably, the pilot resources pattern of the M kinds candidate includes：When port number is 12, In one pilot resources pattern set, a kind of corresponding port number of every kind of pilot resources pattern is 8 pilot tone Resource pattern and two kinds of port numbers be 2 pilot resources pattern, and described two port numbers are led Frequency resource pattern is located at two OFDM symbols of identical, adjacent on frequency domain, and pilot density is each To the RE of each port one, the different port number of different pilot resources pattern correspondences is 8 to PRB Pilot resources pattern and port number be 2 pilot resources pattern combination.

Specifically, when port number is 12, a kind of pilot resources pattern adopts a kind of port number Pilot resources pattern for 8 and two kinds of port numbers are the combination of 2 pilot resources pattern, wherein, two Planting the pilot resources pattern that port number is 2 can have the flexible multiple combination of comparison, to realize various ends Mouth multiplex mode.

Preferably, the pilot resources pattern of the M kinds candidate includes：When port number is 12, In one pilot resources pattern set, two groups of ports of pilot resources pattern correspondence, first group of port adopt the One class code division multiplexing mode, second group of port adopt Equations of The Second Kind code division multiplexing mode, the first kind code division Multiplex mode is different from the Equations of The Second Kind code division multiplexing mode.

Wherein, two groups of ports are respectively adopted different multiplex modes, and two kinds of same pattern satisfaction is different to answer Use mode.

Preferably, the pilot resources pattern of the M kinds candidate includes：In a pilot resources pattern set In conjunction, two groups of ports of pilot resources pattern correspondence, first group of port adopt first kind code division multiplexing mode, Second group of port adopts first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, the first kind code Divide multiplex mode different from the Equations of The Second Kind code division multiplexing mode, the code division multiplexing side that second group of port adopts Formula is configured by base station signaling.

Specifically, in same pilot frequency design, can be in the way of two kinds of code division multiplexings of correspondence.First group Port adopts first kind code division multiplexing mode, second group of port can with using first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, increased the compatibility of second group of port.

Preferably, the pilot resources pattern of the M kinds candidate includes：In a pilot resources pattern set In conjunction, two groups of ports of pilot resources pattern correspondence, first group of port adopt first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, second group of port adopt first kind code division multiplexing mode or Equations of The Second Kind code division multiple With mode, the first kind code division multiplexing mode is different from the Equations of The Second Kind code division multiplexing mode, first group The code division multiplexing mode that port adopts is configured by base station signaling, the code division multiplexing that second group of port adopts Mode is configured by base station signaling.

Specifically, in same pilot frequency design, can be in the way of two kinds of code division multiplexings of correspondence, first group Port adopts first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, and second group of port can adopt First kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, increased first group of port and second group of end The compatibility of mouth.

Preferably, the pilot resources pattern of the M kinds candidate includes：In a pilot resources pattern set In conjunction, the multiplex mode between CSI-RS ports is 4 for the length of code division multiplexing, every group of code division multiplexed pilot Symbol is mapped in a resource pattern that port number is 4 on the RE of PRB couple.

Specifically, increased the mode that the frequency pilot sign after a kind of same group of code division multiplexing is mapped to RE Type, with meet same group 4 port mappings on the resource pattern that port number is 4, with compatibility Traditional port number is 4 pilot resources pattern.

Preferably, the base station determines that the configuration information of CSI-RS includes：When the length of code division multiplexing is When 4, the mapping of the frequency pilot sign after at least one group code division multiplexing to RE adopts first kind mapping mode Or Equations of The Second Kind mapping mode, first kind mapping mode is that the frequency pilot sign after code division multiplexing is mapped to continuously On subcarrier, Equations of The Second Kind mapping mode is that the frequency pilot sign after code division multiplexing is mapped to discrete subcarrier On, the mapping mode of the frequency pilot sign after described group of code division multiplexing to RE is by base station signal deployment.

Specifically, first kind mapping mode has the performance gain of channel estimation for code division multiplexing, and The seriality of two class mapping mode sub-carriers is not required, with higher mapping motility, while can With the pilot frequency design that compatible traditional port number is 4.Frequency pilot sign after same group of code division multiplexing is to RE Mapping mode type adopt and signal to meet actual scene demand.

Preferably, the pilot resources pattern of the M kinds candidate includes：The pilot tone money of the M kinds candidate Source pattern is divided into two set, and the frequency pilot sign after the first one group of pattern set contract code division multiplexing is to RE's Mapping is arrived using first kind mapping mode, the frequency pilot sign after the second one group of pattern set contract code division multiplexing The mapping of RE adopts Equations of The Second Kind mapping mode, the first kind mapping mode and the Equations of The Second Kind mapping side Formula is different.

Wherein, two set correspond to mapping mode of the frequency pilot sign to RE described in different type respectively, with Meet different demands.

Preferably, the base station determines that the configuration information of CSI-RS includes：When answering between CSI-RS ports Be 4 with the length that mode is code division multiplexing, port packet is when carrying out code division multiplexing, port packet mode by Base station signaling is configured, and the port packet mode includes two types.

Specifically, there is two kinds of packet mode port, to meet different need packet demands, makes With signaling, to use different types of port packet mode according to actual scene demand.

Preferably, the pilot resources pattern of the M kinds candidate includes：The pilot tone money of the M kinds candidate Source pattern is divided into two set, and the CSI-RS ports of the first pattern set adopt the first generic port packet side Formula, the CSI-RS ports of the second pattern set adopt the second generic port packet mode, the first kind end Mouth packet mode is different from the second generic port packet mode.

Wherein, two set correspond to different port packet mode type respectively, to meet different demands.

Fig. 7 is the schematic diagram of the device of configuration CSI-RS provided in an embodiment of the present invention.As shown in fig. 7, The device of the configuration CSI-RS that the present embodiment is provided, is arranged at base station, including：Determining module 1101, Generation module 1102 and transmitter module 1103.Wherein it is determined that module 1101 is used to determine CSI-RS Configuration information, generation module 1102 be used for generate include CSI-RS configuration information signaling；Transmitting Module 1103 is used for the signaling that transmitting includes the configuration information of CSI-RS.Wherein, the configuration information bag Include：Multiplex mode between port number, pilot resources pattern-information and CSI-RS ports.Work as port When number is more than 1, there is the pilot resources pattern of M kind candidates in the CSI-RS, M is more than 1 Integer.

Preferably, the pilot resources pattern of the M kinds candidate includes：When the port number is more than the During one threshold value, the pilot resources pattern of the M kinds candidate is at least using between two kinds of CSI-RS ports Multiplex mode.

Preferably, the multiplex mode is code division multiplexing mode.

Preferably, the pilot resources pattern of the M kinds candidate includes：Pilot density is each PRB pair The peak frequency interval of RE of the pattern of one RE in each port in a PRB on is less than or equal to Number is the subcarrier of the 3rd threshold value, the peak frequency at intervals of RE places highest frequency with The difference of place low-limit frequency.

Further, the 3rd threshold value is 9.

Preferably, the pilot resources pattern of the M kinds candidate includes：On each pilot resources pattern The maximum time domain interval of RE is less than the 4th threshold value, wherein, the maximum time domain interval is the RE The last OFDM symbol that is located and the difference of the most front OFDM symbol in place.

Further, the 4th threshold value is 6.

Further, the 4th threshold value is 5.

Preferably, the determining module, for determining the configuration information of CSI-RS, including：Work as code division When the length of multiplexing is 4, the frequency pilot sign after at least one group code division multiplexing to the mapping of RE adopts the One class mapping mode or Equations of The Second Kind mapping mode, first kind mapping mode are the frequency pilot sign after code division multiplexing It is mapped on continuous subcarrier, Equations of The Second Kind mapping mode is mapped to non-for the frequency pilot sign after code division multiplexing On continuous subcarrier, the mapping mode of the frequency pilot sign after described group of code division multiplexing to RE is believed by base station Order configuration.

Preferably, the determining module, for determining the configuration information of CSI-RS, including：Work as CSI-RS Multiplex mode between port is 4 for the length of code division multiplexing, when port packet carries out code division multiplexing, port Packet mode is configured by base station signaling, and the port packet mode includes two types.

In practical application, transmitter module is, for example, the communication with message transmission capability such as emitter unit Part, determining module and generation module are, for example, the elements with information processing capability such as processor.However, The present invention is not limited to this.Above-mentioned module can for example, realize the software and/or hardware of predetermined function Combination.

Below by multiple specific embodiments, the present invention will be described.

Embodiment one

In the present embodiment, base station first determines the configuration information of CSI-RS, and regeneration includes CSI-RS Configuration information signaling, then transmitting include CSI-RS configuration information signaling.Wherein, for example Port number information is represented with a bits (bit), b bit represent pilot resources pattern-information, c bit tables Show the multiplex mode between CSI-RS ports, wherein, a+b+c=X.

Or, it would however also be possible to employ a bit represent port number information, and b bit represent that pilot resources pattern is believed The combined coding of the multiplex mode between breath and CSI-RS ports, wherein, a+b=X.

Or, it would however also be possible to employ X bit represent port number information, pilot resources pattern-information and CSI-RS The combined coding of the multiplex mode between port.

Or, it is also possible to port number information is represented with a bit, b bit represent pilot resources pattern-information, Meanwhile, the multiplex mode between pilot resources pattern-information prompting CSI-RS ports.

Wherein, port number can be the value in { 1,2,4,8,12,16 }.

When port number is more than 1, there is the pilot resources pattern of M kind candidates in CSI-RS, M is big In 1 integer.

Embodiment two

In the present embodiment, when port number is more than the first threshold value (TH1), M kind candidates' leads At least using the code division multiplexing mode between two kinds of CSI-RS ports, M is whole more than 1 to frequency resource pattern Number.TH1 can in { 4,8,12 } value；Code division multiplexing mode between CSI-RS ports includes： The length of code division multiplexing be 2, code division multiplexing length be 4, in time domain code division multiplexing, on frequency domain Code division multiplexing, code division multiplexing and the combination with upper type simultaneously on time-domain and frequency-domain.

Embodiment three

In the present embodiment, the pilot resources pattern of M kind candidates is divided into two set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the Two class multiplex modes, first kind multiplex mode are different with Equations of The Second Kind multiplex mode, wherein, M is more than 1 Integer.

For example, the first kind code division multiplexing mode that the CSI-RS ports of the first pattern set adopt for The length of code division multiplexing is 2, the Equations of The Second Kind code division multiplexing of the CSI-RS ports employing of the second pattern set Mode is 4 for the length of code division multiplexing；Or, the CSI-RS ports of the first pattern set adopt the One class code division multiplexing mode is 4 for the length of code division multiplexing, and the CSI-RS ports of the second pattern set are adopted It is 2 that Equations of The Second Kind code division multiplexing mode is the length of code division multiplexing.

Example IV

In the present embodiment, the pilot resources pattern of M kind candidates is divided into two set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the One class multiplex mode or Equations of The Second Kind multiplex mode, first kind multiplex mode are different with Equations of The Second Kind multiplex mode, Wherein, M is the integer more than 1.The multiplex mode that the CSI-RS ports of the second pattern set adopt by Base station signaling is configured.

For example, the first kind code division multiplexing mode that the CSI-RS ports of the first pattern set adopt for The length of code division multiplexing is 2, the code division multiplexing mode that the CSI-RS ports of the second pattern set adopt for The length of code division multiplexing is 2 or 4；Or, the first of the CSI-RS ports employing of the first pattern set Class code division multiplexing mode is 4 for the length of code division multiplexing, and the CSI-RS ports of the second pattern set adopt Code division multiplexing mode for code division multiplexing length be 2 or 4.Wherein, the CSI-RS of the second pattern set The code division multiplexing length that port adopts is by base station signal deployment.

Embodiment five

In the present embodiment, the pilot resources pattern of M kind candidates is divided into three set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the Two class multiplex modes, the CSI-RS ports of the 3rd pattern set adopt first kind multiplex mode or Equations of The Second Kind Multiplex mode, first kind multiplex mode are different with Equations of The Second Kind multiplex mode, wherein, M is whole more than 1 Number.The multiplex mode that the CSI-RS ports of the 3rd pattern set adopt is configured by base station signaling.

For example, the first kind code division multiplexing mode that the CSI-RS ports of the first pattern set adopt for The length of code division multiplexing is 2, the Equations of The Second Kind code division multiplexing of the CSI-RS ports employing of the second pattern set Mode is 4 for the length of code division multiplexing, the code division multiplexing of the CSI-RS ports employing of the 3rd pattern set Mode is 2 or 4 for the length of code division multiplexing；Or, the CSI-RS ports of the first pattern set adopt First kind code division multiplexing mode for code division multiplexing length be 4, the CSI-RS ends of the second pattern set The Equations of The Second Kind code division multiplexing mode that mouth is adopted is 2 for the length of code division multiplexing, the 3rd pattern set The code division multiplexing mode that CSI-RS ports adopt is 2 or 4 for the length of code division multiplexing.Wherein, the 3rd figure The code division multiplexing length that the CSI-RS ports of case set adopt is by base station signal deployment.

Embodiment six

In the present embodiment, when port number is more than the second threshold value (TH2), M kind candidates' leads Frequency resource pattern at least adopts two kinds of pilot densities, and M is the integer more than 1.

For example, when TH2 is 8, port number is 12, then have following three kinds of pilot densities：Often One PRB to the RE of each port one, each two PRB to the RE of each port one, per three PRB To the RE of each port two；When TH2 is 8, port number is 16, then have following two pilot densities： , to the RE of each port one, each two PRB is to the RE of each port one for each PRB.

Embodiment seven

In the present embodiment, the pilot resources pattern of M kind candidates is divided into two set, the first pattern set Using first kind pilot density, the second pattern set adopts Equations of The Second Kind pilot density, first kind pilot density It is different from Equations of The Second Kind pilot density, wherein, M is the integer more than 1.

For example, the pilot density that the set of first kind pattern is adopted is each PRB to each port one Individual RE, the pilot density that Equations of The Second Kind pattern set is adopted are each two PRB to the RE of each port one； Or, the pilot density that first kind pattern set is adopted is each two PRB to the RE of each port one, The pilot density that Equations of The Second Kind pattern set is adopted is each PRB to the RE of each port one.

Embodiment eight

In the present embodiment, in a pilot resources pattern set, between CSI-RS ports, code division is multiple Length is 4, and 4 RE of every group of code division multiplexed pilot symbol mapping are carried positioned at continuous two sons On ripple.

As shown in figure 8, in the case that port number is 16, every group of CSI-RS code division multiplexing is continuous On 4 RE of subcarrier, there are two kinds of pilot resources patterns in fig. 8：CSI-RS RE for config#0、 CSI-RS RE for config#1, in every kind of pilot resources pattern, 16 ports are divided into 4 groups：15, 16,17,18 }, { 19,20,21,22 }, { 23,24,25,26 }, { 27,28,29,30 }, 4 RE of every group of port code division multiplexing mapping are located on continuous two subcarriers.

As shown in figure 9, in the case that port number is 12, every group of CSI-RS code division multiplexing is continuous On 4 RE of subcarrier, there are three kinds of pilot resources patterns in fig .9：CSI-RS RE for config#0、 CSI-RS RE for config#1, CSI-RS RE for config#2, in every kind of pilot resources pattern, 12 Individual port is divided into 3 groups：{ 15,16,17,18 }, { 19,20,21,22 }, 23,24,25, 26 }, 4 RE of every group of port code division multiplexing mapping are located on continuous two subcarriers.

Embodiment nine

In the present embodiment, pilot density be each PRB to the pattern of one RE in each port at one PRB can not be the 3rd thresholding more than (i.e. less than or equal to) number to the peak frequency of upper RE interval The subcarrier of value (TH3), i.e., described peak frequency interval is RE places highest frequency and place The difference of low-limit frequency.

Further, TH3 is 9.

Figure 10 be pilot density be each PRB to the RE of each port one in the case of, a PRB 9 pattern is not more than to upper peak frequency interval.In Fig. 10, two kinds of patterns are had：CSI-RS RE For config#0, CSI-RS RE for config#1, wherein, a PRB of pattern 0 is to upper maximum Frequency interval is 7 subcarriers, and a PRB of pattern 1 is carried at intervals of 9 sons to upper peak frequency Ripple.

Embodiment ten

In the present embodiment, the RE maximum time domain intervals on each pilot resources pattern are less than the 4th thresholding Value (TH4), the maximum time domain interval be last OFDM symbol that the RE is located be located most before The difference of OFDM symbol.

Further, TH4 is 6.

Figure 11 is pattern of the maximum time domain interval less than 6.In fig. 11, two kinds of patterns are had：CSI-RS RE for config#0, CSI-RS RE for config#1, the maximum time domain interval of pattern 0 is 5, figure The maximum time domain interval of case 1 is 4.

Further, TH4 is 5.

Figure 12 is pattern of the maximum time domain interval less than 5.In fig. 12, two kinds of patterns are had：CSI-RS RE for config#0, CSI-RS RE for config#1, the maximum time domain interval of pattern 0 is 1, figure The maximum time domain interval of case 1 is 4.

Embodiment 11

In the present embodiment, when port number is 12, in a pilot resources pattern set, often The pilot resources pattern that a kind of port number of pilot resources pattern correspondence is 8 is planted, and pilot density is every Three PRB are to the RE of each port two, the different port number of different pilot resources pattern correspondences For 8 pilot resources pattern.

Figure 13 is that pilot density is to each port per three PRB in the case that port number is 12 The pattern of two RE.In fig. 13,5 kinds of patterns are had：CSI-RS RE for config#0、CSI-RS RE for config#1、CSI-RS RE for config#2、CSI-RS RE for config#3、CSI-RS RE for config#4。

Embodiment 12

In the present embodiment, when port number is 12, in a pilot resources pattern set, often It is 2 that kind pilot resources pattern corresponds to the pilot resources pattern that a kind of port number is 4 and a kind of port number Pilot resources pattern, and in 2 OFDM symbols of identical, pilot density is each two PRB To the RE of each port one, the different corresponding port numbers of pilot resources pattern is 4 pilot resources Pattern is different from the combination of the pilot resources pattern that port number is 2.

Figure 14 is that, in the case that port number is 12, pilot density is each two PRB to each port The pattern of one RE.In fig. 14,5 kinds of patterns are had：CSI-RS RE for config#0、CSI-RS RE for config#1、CSI-RS RE for config#2、CSI-RS RE for config#3、CSI-RS RE for config#4。

Embodiment 13

In the present embodiment, when port number is 12, in a pilot resources pattern set, often It is 2 that kind pilot resources pattern corresponds to the pilot resources pattern that a kind of port number is 8 and two kinds of port numbers Pilot resources pattern, and the pilot resources pattern of both port numbers be located at identical 2 OFDM symbol, it is adjacent on frequency domain, pilot density be each PRB to the RE of each port one, no With the corresponding port number of pilot resources pattern be 8 pilot resources pattern and port number is 2 to lead The combination of frequency resource pattern is different.

Figure 15 is in the case that port number is 12, by the pattern that a port number is 8 and two ends Mouthful number be 2 combinations of patterns into pattern.In fig .15, the pilot density of pattern is each PRB To the RE of each port one.

Embodiment 14

In the present embodiment, when port number is 12, in a pilot resources pattern set, lead Two groups of ports of frequency resource pattern correspondence, first group of port adopts first kind code division multiplexing mode, second group of end Mouth adopts Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing mode and Equations of The Second Kind code division multiplexing side Formula is different.

For example, port { 15,16,17,18,19,20,21,22 } are first group, using the first kind Code division multiplexing mode, port { 23,24,25,26 } are second group, using Equations of The Second Kind code division multiplexing mode； Or, port { 15,16,17,18,19,20,21,22 } are first group, using Equations of The Second Kind code division Multiplex mode, port { 23,24,25,26 } are second group, using first kind code division multiplexing mode；

Embodiment 15

In the present embodiment, in a pilot resources pattern set, two groups of ends of pilot resources pattern correspondence Mouthful, first group of port adopts first kind code division multiplexing mode, second group of port to adopt first kind code division multiplexing Mode or Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing mode and Equations of The Second Kind code division multiplexing side Formula is different.The code division multiplexing mode of second group of port employing is configured by base station signaling.

For example, first group of port adopt length for 2 code division multiplexing mode, second group of port can adopt Length is 2 or 4 code division multiplexing mode, the code division multiplexing adopted by second group of port of base station signal deployment Mode；Or, first group of port adopt length for 4 code division multiplexing mode, second group of port can be with Adopt length for 2 or 4 code division multiplexing mode, the code division adopted by second group of port of base station signal deployment The mode of multiplexing.

Embodiment 16

In the present embodiment, in a pilot resources pattern set, two groups of ends of pilot resources pattern correspondence Mouthful, first group of port adopts first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, second group of end Mouth adopts first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing side Formula is different from Equations of The Second Kind code division multiplexing mode.The code division multiplexing mode of first group of port employing is by base station signaling Configured, the code division multiplexing mode of second group of port employing is configured by base station signaling.

For example, first group of port can with adopt length for 2 or 4 code division multiplexing mode, second group of port Can with adopt length for 2 or 4 code division multiplexing mode, by first group of port of base station signal deployment and second The code division multiplexing mode that group port adopts.

Embodiment 17

In the present embodiment, in a pilot resources pattern set, between CSI-RS ports, code division is multiple Length is 4, and every group of code division multiplexed pilot symbol is mapped in the resource pattern that port number is 4 On the RE of PRB couple.

Fig. 4 is the pattern that port number is in the case of 4, and 10 patterns are had in Fig. 4：CSI-RS RE for config#0、CSI-RS RE for config#1、CSI-RS RE for config#2、CSI-RS RE for config#3、CSI-RS RE for config#4、CSI-RS RE for config#5、CSI-RS RE for config#6、CSI-RS RE for config#7、CSI-RS RE for config#8、CSI-RS RE for config#9。

Figure 16 is that every group of code division multiplexed pilot symbol is mapped in the resource pattern that port number is 4 and exists On the RE of PRB couple.In figure 16, port is grouped as follows：{ 15,16,19,20 }, 17, 18,21,22 }, { 23,24,27,28 }, { 25,26,29,30 }, every group of code division multiplexed pilot Symbol is mapped in a resource pattern that port number is 4 on the RE of PRB couple.

Embodiment 18

In the present embodiment, in the case where the length of code division multiplexing is 4, at least one group code division multiplexing Frequency pilot sign afterwards is configured to the mapping mode of RE by base station signaling.The mapping mode has two kinds Type, first kind mapping mode are that the frequency pilot sign after code division multiplexing is mapped on continuous subcarrier, the Two class mapping modes are that the frequency pilot sign after code division multiplexing is mapped on discrete subcarrier.

For example, the first species mapping mode be code division multiplexing after frequency pilot sign be mapped to continuous 2 it is sub On carrier wave, it is sub for 6 that Equations of The Second Kind mapping mode is mapped to frequency domain difference for the frequency pilot sign after code division multiplexing On 2 subcarriers of carrier wave.

Embodiment 19

In the present embodiment, the pilot resources pattern of M kind candidates is divided into two set, the first pattern set Frequency pilot sign after same group of code division multiplexing adopts first kind mapping mode, the second pattern to the mapping of RE The mapping for gathering the frequency pilot sign after same group of code division multiplexing to RE using Equations of The Second Kind mapping mode, first Class mapping mode is different with Equations of The Second Kind mapping mode, wherein, M is the integer more than 1.

For example, the first pattern set adopts continuous subcarrier maps type fashion, the second pattern set to adopt With discontinuous subcarrier maps type fashion.

Embodiment 20

In the present embodiment, in the case where code division multiplexing length is 4, port packet carries out code division multiplexing When, by the type of base station signal deployment port packet mode.Wherein, the port packet mode type has Two kinds.

For example, the first generic port packet mode is as follows：{ 15,16,17,18 }, 19,20,21, 22 }, { 23,24,25,26 }, { 27,28,29,30 }；

Second generic port packet mode is as follows：{ 15,16,19,20 }, { 17,18,21,22 }, { 23,24,27,28 }, { 25,26,29,30 }.

Embodiment 21

In the present embodiment, the pilot resources pattern of M kind candidates is divided into two set, the first pattern set CSI-RS ports adopt the first generic port packet mode, the CSI-RS ports of the second pattern set are adopted With the second generic port packet mode, the first generic port packet mode and the second generic port packet mode are not Together, wherein, M is the integer more than 1.

For example, the CSI-RS ports of the first pattern set adopt the first generic port packet mode, the second figure The CSI-RS ports of case set adopt the second generic port packet mode；

First generic port packet mode is as follows：{ 15,16,17,18 }, { 19,20,21,22 }, { 23,24,25,26 }, { 27,28,29,30 }；

The ultimate principle and principal character and advantages of the present invention of the present invention has been shown and described above.This It is bright to be not restricted to the described embodiments, the simply explanation present invention's described in above-described embodiment and description Principle, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, These changes and improvements are both fallen within scope of the claimed invention.

Claims

1. a kind of method of configurating channel state measurement pilot tone CSI-RS, it is characterised in that include：

Base station determines the configuration information of CSI-RS；

The base station generates the signaling of the configuration information for including CSI-RS；

Include the signaling of the configuration information of CSI-RS described in the Base Transmitter；

Wherein, the configuration information includes：Port number, pilot resources pattern-information and CSI-RS Multiplex mode between port；When port number is more than 1, there is leading for M kind candidates in the CSI-RS Frequency resource pattern, M are the integer more than 1.

2. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When the port number is more than the first threshold value, the pilot tone money of the M kinds candidate Source pattern is at least using the multiplex mode between two kinds of CSI-RS ports.

3. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the Two class multiplex modes, the first kind multiplex mode are different from the Equations of The Second Kind multiplex mode.

4. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the One class multiplex mode or Equations of The Second Kind multiplex mode, the first kind multiplex mode and the Equations of The Second Kind multiplexing side Formula is different, and the multiplex mode that the CSI-RS ports of the second pattern set adopt is configured by base station signaling.

5. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into three set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the Two class multiplex modes, the CSI-RS ports of the 3rd pattern set adopt first kind multiplex mode or Equations of The Second Kind Multiplex mode, the first kind multiplex mode are different from the Equations of The Second Kind multiplex mode, the 3rd pattern set CSI-RS ports adopt multiplex mode configured by base station signaling.

6. the method as described in any one of claim 3 to 5, it is characterised in that the multiplex mode For code division multiplexing mode.

7. such as the method in claim 6, it is characterised in that first kind code division multiplexing mode is orthogonal Code length is 2 code division multiplexing, and Equations of The Second Kind code division multiplexing mode is code division multiplexing that orthogonal code length is 4.

8. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When the port number is more than the second threshold value, the pilot tone money of the M kinds candidate Source pattern at least adopts two kinds of pilot densities.

9. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set Using first kind pilot density, the second pattern set adopts Equations of The Second Kind pilot density, the first kind pilot tone Density is different from the Equations of The Second Kind pilot density.

10. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：In a pilot resources pattern set, the multiplex mode between CSI-RS ports is code The length for dividing multiplexing is 4, and 4 Resource Unit RE of every group of code division multiplexed pilot symbol mapping are located at company On two continuous subcarriers.

11. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：Pilot density is that each Physical Resource Block PRB exists to the pattern of one RE in each port One PRB is carried less than or equal to the son that number is the 3rd threshold value to the peak frequency interval of upper RE Ripple, the peak frequency is at intervals of RE places highest frequency and the difference of place low-limit frequency.

12. methods as claimed in claim 11, it is characterised in that the 3rd threshold value is 9.

13. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The maximum time domain interval of the RE on each pilot resources pattern is less than the 4th threshold value, Wherein, the maximum time domain interval be last orthogonal frequency division multiplex OFDM symbol that the RE is located with The difference of the most front OFDM symbol that is located.

14. methods as claimed in claim 13, it is characterised in that the 4th threshold value is 6.

15. methods as claimed in claim 13, it is characterised in that the 4th threshold value is 5.

16. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When port number is 12, in a pilot resources pattern set, every kind of pilot tone A kind of port number of resource pattern correspondence is 8 pilot resources pattern, and pilot density is per three To the RE of each port two, the different port number of different pilot resources pattern correspondences is 8 to PRB Pilot resources pattern.

17. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When port number is 12, in a pilot resources pattern set, every kind of pilot tone A kind of port number of resource pattern correspondence is 4 pilot resources pattern and the pilot tone that a kind of port number is 2 Resource pattern, and in two OFDM symbols of identical, pilot density is each two PRB to every One RE of a port, the different port number of different pilot resources pattern correspondences are 4 pilot tone money Source pattern and port number are the combination of 2 pilot resources pattern.

18. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When port number is 12, in a pilot resources pattern set, every kind of pilot tone The pilot tone that a kind of resource pattern port number of correspondence is 8 pilot resources pattern and two kinds of port numbers are 2 Resource pattern, and the pilot resources pattern of described two port numbers is located at two OFDM of identical Symbol, adjacent on frequency domain, pilot density is each PRB to the RE of each port one, different The pilot resources pattern different port numbers of correspondence are 8 pilot resources pattern and port number is 2 to lead The combination of frequency resource pattern.

19. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When port number is 12, in a pilot resources pattern set, pilot resources Two groups of ports of pattern correspondence, first group of port adopt first kind code division multiplexing mode, second group of port to adopt Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing mode and the Equations of The Second Kind code division multiplexing mode It is different.

20. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：In a pilot resources pattern set, two groups of ports of pilot resources pattern correspondence, the One group of port adopts first kind code division multiplexing mode, second group of port adopt first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing mode and the Equations of The Second Kind code division multiplexing mode Difference, the code division multiplexing mode of second group of port employing are configured by base station signaling.

21. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：In a pilot resources pattern set, two groups of ports of pilot resources pattern correspondence, the One group of port adopts first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, second group of port to adopt First kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing mode and institute Equations of The Second Kind code division multiplexing mode difference is stated, the code division multiplexing mode of first group of port employing is entered by base station signaling Row configuration, the code division multiplexing mode of second group of port employing are configured by base station signaling.

22. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：In a pilot resources pattern set, the multiplex mode between CSI-RS ports is code The length for dividing multiplexing is 4, and every group of code division multiplexed pilot symbol is mapped in the resource that port number is 4 Pattern is on the RE of PRB couple.

23. the method for claim 1, it is characterised in that the base station determines CSI-RS's Configuration information includes：Pilot tone symbol when the length of code division multiplexing is 4, after at least one group code division multiplexing Number first kind mapping mode or the Equations of The Second Kind mapping mode, first kind mapping mode is adopted to be to the mapping of RE Frequency pilot sign after code division multiplexing is mapped on continuous subcarrier, and Equations of The Second Kind mapping mode is code division multiplexing Frequency pilot sign afterwards is mapped on discrete subcarrier, and the frequency pilot sign after described group of code division multiplexing is arrived The mapping mode of RE is by base station signal deployment.

24. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set Frequency pilot sign after same group of code division multiplexing adopts first kind mapping mode, the second pattern to the mapping of RE The mapping for gathering the frequency pilot sign after same group of code division multiplexing to RE is using Equations of The Second Kind mapping mode, described First kind mapping mode is different from the Equations of The Second Kind mapping mode.

25. the method for claim 1, it is characterised in that the base station determines CSI-RS's Configuration information includes：When the multiplex mode between CSI-RS ports is 4 for the length of code division multiplexing, port When packet carries out code division multiplexing, port packet mode is configured by base station signaling, the port packet side Formula includes two types.

26. the method for claim 1, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set CSI-RS ports adopt the first generic port packet mode, the CSI-RS ports of the second pattern set are adopted With the second generic port packet mode, the first generic port packet mode and the second generic port packet side Formula is different.

27. a kind of devices of configurating channel state measurement pilot tone CSI-RS, it is characterised in that include：

Determining module, for determining the configuration information of CSI-RS；

Generation module, for generating the signaling of the configuration information for including CSI-RS；

Transmitter module, for launching the signaling of the configuration information including CSI-RS；

28. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When the port number is more than the first threshold value, the pilot tone money of the M kinds candidate Source pattern is at least using the multiplex mode between two kinds of CSI-RS ports.

29. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the Two class multiplex modes, the first kind multiplex mode are different from the Equations of The Second Kind multiplex mode.

30. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the One class multiplex mode or Equations of The Second Kind multiplex mode, the first kind multiplex mode and the Equations of The Second Kind multiplexing side Formula is different, and the multiplex mode that the CSI-RS ports of the second pattern set adopt is configured by base station signaling.

31. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into three set, the first pattern set CSI-RS ports adopt first kind multiplex mode, the CSI-RS ports of the second pattern set adopt the Two class multiplex modes, the CSI-RS ports of the 3rd pattern set adopt first kind multiplex mode or Equations of The Second Kind Multiplex mode, the first kind multiplex mode are different from the Equations of The Second Kind multiplex mode, the 3rd pattern set CSI-RS ports adopt multiplex mode configured by base station signaling.

32. devices as described in any one of claim 29 to 31, it is characterised in that the multiplexing side Formula is code division multiplexing mode.

33. devices as claimed in claim 32, it is characterised in that first kind code division multiplexing mode is Orthogonal code length is 2 code division multiplexing, and Equations of The Second Kind code division multiplexing mode is code division that orthogonal code length is 4 Multiplexing.

34. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When the port number is more than the second threshold value, the pilot tone money of the M kinds candidate Source pattern at least adopts two kinds of pilot densities.

35. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set Using first kind pilot density, the second pattern set adopts Equations of The Second Kind pilot density, the first kind pilot tone Density is different from the Equations of The Second Kind pilot density.

36. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：In a pilot resources pattern set, the multiplex mode between CSI-RS ports is code The length for dividing multiplexing is 4, and 4 RE of every group of code division multiplexed pilot symbol mapping are located at continuous two On subcarrier.

37. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：Pilot density be each PRB to the pattern of one RE in each port in a PRB The peak frequency of upper RE is spaced less than or equal to the subcarrier that number is the 3rd threshold value, it is described most Big frequency interval is the difference of RE places highest frequency and place low-limit frequency.

38. devices as claimed in claim 37, it is characterised in that the 3rd threshold value is 9.

39. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The maximum time domain interval of the RE on each pilot resources pattern is less than the 4th threshold value, Wherein, the maximum time domain interval be last OFDM symbol that the RE is located be located most before The difference of OFDM symbol.

40. devices as claimed in claim 39, it is characterised in that the 4th threshold value is 6.

41. devices as claimed in claim 39, it is characterised in that the 4th threshold value is 5.

42. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When port number is 12, in a pilot resources pattern set, every kind of pilot tone A kind of port number of resource pattern correspondence is 8 pilot resources pattern, and pilot density is per three To the RE of each port two, the different port number of different pilot resources pattern correspondences is 8 to PRB Pilot resources pattern.

43. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When port number is 12, in a pilot resources pattern set, every kind of pilot tone A kind of port number of resource pattern correspondence is 4 pilot resources pattern and the pilot tone that a kind of port number is 2 Resource pattern, and in two OFDM symbols of identical, pilot density is each two PRB to every One RE of a port, the different port number of different pilot resources pattern correspondences are 4 pilot tone money Source pattern and port number are the combination of 2 pilot resources pattern.

44. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When port number is 12, in a pilot resources pattern set, every kind of pilot tone The pilot tone that a kind of resource pattern port number of correspondence is 8 pilot resources pattern and two kinds of port numbers are 2 Resource pattern, and the pilot resources pattern of described two port numbers is located at two OFDM of identical Symbol, adjacent on frequency domain, pilot density is each PRB to the RE of each port one, different The pilot resources pattern different port numbers of correspondence are 8 pilot resources pattern and port number is 2 to lead The combination of frequency resource pattern.

45. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：When port number is 12, in a pilot resources pattern set, pilot resources Two groups of ports of pattern correspondence, first group of port adopt first kind code division multiplexing mode, second group of port to adopt Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing mode and the Equations of The Second Kind code division multiplexing mode It is different.

46. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：In a pilot resources pattern set, two groups of ports of pilot resources pattern correspondence, the One group of port adopts first kind code division multiplexing mode, second group of port adopt first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing mode and the Equations of The Second Kind code division multiplexing mode Difference, the code division multiplexing mode of second group of port employing are configured by base station signaling.

47. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：In a pilot resources pattern set, two groups of ports of pilot resources pattern correspondence, the One group of port adopts first kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, second group of port to adopt First kind code division multiplexing mode or Equations of The Second Kind code division multiplexing mode, the first kind code division multiplexing mode and institute Equations of The Second Kind code division multiplexing mode difference is stated, the code division multiplexing mode of first group of port employing is entered by base station signaling Row configuration, the code division multiplexing mode of second group of port employing are configured by base station signaling.

48. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：In a pilot resources pattern set, the multiplex mode between CSI-RS ports is code The length for dividing multiplexing is 4, and every group of code division multiplexed pilot symbol is mapped in the resource that port number is 4 Pattern is on the RE of PRB couple.

49. devices as claimed in claim 27, it is characterised in that the determining module, for true Determine the configuration information of CSI-RS, including：When the length of code division multiplexing is 4, at least one group code division Frequency pilot sign after multiplexing adopts first kind mapping mode or Equations of The Second Kind mapping mode to the mapping of RE, the One class mapping mode is that the frequency pilot sign after code division multiplexing is mapped on continuous subcarrier, Equations of The Second Kind mapping Mode is that the frequency pilot sign after code division multiplexing is mapped on discrete subcarrier, after described group of code division multiplexing Frequency pilot sign to RE mapping mode by base station signal deployment.

50. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set Frequency pilot sign after same group of code division multiplexing adopts first kind mapping mode, the second pattern to the mapping of RE The mapping for gathering the frequency pilot sign after same group of code division multiplexing to RE is using Equations of The Second Kind mapping mode, described First kind mapping mode is different from the Equations of The Second Kind mapping mode.

51. devices as claimed in claim 27, it is characterised in that the determining module, for true Determine the configuration information of CSI-RS, including：When the multiplex mode between CSI-RS ports is code division multiplexing Length is 4, and when port packet carries out code division multiplexing, port packet mode is configured by base station signaling, The port packet mode includes two types.

52. devices as claimed in claim 27, it is characterised in that the pilot tone money of the M kinds candidate Source pattern includes：The pilot resources pattern of the M kinds candidate is divided into two set, the first pattern set CSI-RS ports adopt the first generic port packet mode, the CSI-RS ports of the second pattern set are adopted With the second generic port packet mode, the first generic port packet mode and the second generic port packet side Formula is different.